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A25L080 Series
Block Diagram
HOLD
W
High Voltage
Generator
Control Logic
S
C
DIO
DO
I/O Shift Register
Address register
and Counter
256 Byte
Data Buffer
Status
Register
FFFFFh (8M)
Size of the
memory area
00000h
000FFh
256 Byte (Page Size)
X Decoder
Pin Descriptions
Pin No.
Logic Symbol
Description
VCC
C
Serial Clock
Serial Data Input 1
Serial Data Output 2
DIO
DO
DIO
DO
C
S
Chip Select
S
A25L080
Write Protect
Hold
W
W
HOLD
HOLD
VCC
VSS
Supply Voltage
Ground
VSS
Notes:
1. The DIO is also used as an output pin when the Fast
Read Dual Output instruction and the Fast Read Dual
Input-Output instruction are executed.
2. The DO is also used as an input pin when the Fast
Read Dual Input-Output instruction is executed.
(March, 2012, Version 1.6)
2
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